Hi Bob,
That is correct. Each device can control their own mix. SoundCaster, the main macbook software, will automatically recognize all the channels available from the console or audio interface. Pick up to 16 channels to include in the mix and SoundCaster will broadcast them over Wi-Fi to the Performer app the musicians use to both hear and control the mix. We plan to lift the 16 channel limitation in a later release.
Thanks,
Brandon

Hello Al,
Performer will run on iPod Touch but it should be 5th generation or newer. It is quite a nice solution for delivering audio in a small package. The only downside is is short battery life. You would be better served to buy a used iPhone 6 to dedicate for this use. You can find them for under $200 these days and they still have a headphone jack. A fully charged iPhone 6 will last 3~4 hours compared to 1~2 for the iPod Touch.
Thanks,
Brandon

Hi Tom,
We'd love to have you try it out with your team.
The latency is nearly imperceptible to all but the most critical ears.
Send me an email at leafblad@audiofusionsystems.com if you don't get one from me today.
Thanks,
Brandon